Mercurial > hgrepos > Python2 > PyMuPDF

annotate mupdf-source/thirdparty/gumbo-parser/src/string_buffer.h @ 10:76e05e28f6a8

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Also use the LLVM linker by symlinking and use LLVM's ar now
author Franz Glasner <fzglas.hg@dom66.de>
date Wed, 17 Sep 2025 06:30:46 +0200
parents b50eed0cc0ef
children
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1 // Copyright 2010 Google Inc. All Rights Reserved.
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2 //
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3 // Licensed under the Apache License, Version 2.0 (the "License");
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4 // you may not use this file except in compliance with the License.
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5 // You may obtain a copy of the License at
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6 //
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7 // http://www.apache.org/licenses/LICENSE-2.0
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8 //
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9 // Unless required by applicable law or agreed to in writing, software
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10 // distributed under the License is distributed on an "AS IS" BASIS,
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11 // WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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12 // See the License for the specific language governing permissions and
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13 // limitations under the License.
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14 //
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15 // Author: jdtang@google.com (Jonathan Tang)
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16 //
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17 #ifndef GUMBO_STRING_BUFFER_H_
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18 #define GUMBO_STRING_BUFFER_H_
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20 #include <stdbool.h>
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21 #include <stddef.h>
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23 #include "gumbo.h"
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25 #ifdef __cplusplus
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26 extern "C" {
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27 #endif
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29 struct GumboInternalParser;
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31 // A struct representing a mutable, growable string. This consists of a
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32 // heap-allocated buffer that may grow (by doubling) as necessary. When
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33 // converting to a string, this allocates a new buffer that is only as long as
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34 // it needs to be. Note that the internal buffer here is *not* nul-terminated,
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35 // so be sure not to use ordinary string manipulation functions on it.
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36 typedef struct {
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37 // A pointer to the beginning of the string. NULL iff length == 0.
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38 char* data;
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40 // The length of the string fragment, in bytes. May be zero.
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41 size_t length;
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43 // The capacity of the buffer, in bytes.
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44 size_t capacity;
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45 } GumboStringBuffer;
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47 // Initializes a new GumboStringBuffer.
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48 void gumbo_string_buffer_init(
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49 struct GumboInternalParser* parser, GumboStringBuffer* output);
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51 // Ensures that the buffer contains at least a certain amount of space. Most
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52 // useful with snprintf and the other length-delimited string functions, which
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53 // may want to write directly into the buffer.
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54 void gumbo_string_buffer_reserve(struct GumboInternalParser* parser,
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55 size_t min_capacity, GumboStringBuffer* output);
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57 // Appends a single Unicode codepoint onto the end of the GumboStringBuffer.
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58 // This is essentially a UTF-8 encoder, and may add 1-4 bytes depending on the
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59 // value of the codepoint.
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60 void gumbo_string_buffer_append_codepoint(
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61 struct GumboInternalParser* parser, int c, GumboStringBuffer* output);
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63 // Appends a string onto the end of the GumboStringBuffer.
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64 void gumbo_string_buffer_append_string(struct GumboInternalParser* parser,
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65 GumboStringPiece* str, GumboStringBuffer* output);
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67 // Converts this string buffer to const char*, alloctaing a new buffer for it.
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68 char* gumbo_string_buffer_to_string(
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69 struct GumboInternalParser* parser, GumboStringBuffer* input);
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71 // Reinitialize this string buffer. This clears it by setting length=0. It
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72 // does not zero out the buffer itself.
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73 void gumbo_string_buffer_clear(
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74 struct GumboInternalParser* parser, GumboStringBuffer* input);
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76 // Deallocates this GumboStringBuffer.
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77 void gumbo_string_buffer_destroy(
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78 struct GumboInternalParser* parser, GumboStringBuffer* buffer);
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80 #ifdef __cplusplus
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81 }
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82 #endif
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84 #endif // GUMBO_STRING_BUFFER_H_